diff options
Diffstat (limited to 'src/lib/util')
-rw-r--r-- | src/lib/util/disasmintf.cpp | 47 | ||||
-rw-r--r-- | src/lib/util/disasmintf.h | 69 | ||||
-rw-r--r-- | src/lib/util/timeconv.h | 83 |
3 files changed, 192 insertions, 7 deletions
diff --git a/src/lib/util/disasmintf.cpp b/src/lib/util/disasmintf.cpp new file mode 100644 index 00000000000..9699f68e823 --- /dev/null +++ b/src/lib/util/disasmintf.cpp @@ -0,0 +1,47 @@ +#include "disasmintf.h" + +util::u32 util::disasm_interface::interface_flags() const +{ + return 0; +} + +util::u32 util::disasm_interface::page_address_bits() const +{ + throw ("unimplemented page_address_bits called"); +} + +util::u32 util::disasm_interface::page2_address_bits() const +{ + throw ("unimplemented page2_address_bits called"); +} + +util::disasm_interface::offs_t util::disasm_interface::pc_linear_to_real(offs_t pc) const +{ + throw ("unimplemented pc_linear_to_real called"); +} + +util::disasm_interface::offs_t util::disasm_interface::pc_real_to_linear(offs_t pc) const +{ + throw ("unimplemented pc_real_to_linear called"); +} + +util::u8 util::disasm_interface::decrypt8(u8 value, offs_t pc, bool opcode) const +{ + throw ("unimplemented decrypt8 called"); +} + +util::u16 util::disasm_interface::decrypt16(u16 value, offs_t pc, bool opcode) const +{ + throw ("unimplemented decrypt16 called"); +} + +util::u32 util::disasm_interface::decrypt32(u32 value, offs_t pc, bool opcode) const +{ + throw ("unimplemented decrypt32 called"); +} + +util::u64 util::disasm_interface::decrypt64(u64 value, offs_t pc, bool opcode) const +{ + throw ("unimplemented decrypt64 called"); +} + diff --git a/src/lib/util/disasmintf.h b/src/lib/util/disasmintf.h new file mode 100644 index 00000000000..908bd762bdb --- /dev/null +++ b/src/lib/util/disasmintf.h @@ -0,0 +1,69 @@ +// license:BSD-3-Clause +// copyright-holders:Olivier Galibert +/*************************************************************************** + + disasmintf.h + + Generic disassembler interface. + +***************************************************************************/ + +#pragma once + +#ifndef MAME_UTIL_DISASMINTF_H +#define MAME_UTIL_DISASMINTF_H + +#include "coretmpl.h" + +namespace util { +// class implementing a disassembler +class disasm_interface +{ +public: + using offs_t = u32; + + // Disassembler constants for the return value + static constexpr u32 SUPPORTED = 0x80000000; // are disassembly flags supported? + static constexpr u32 STEP_OUT = 0x40000000; // this instruction should be the end of a step out sequence + static constexpr u32 STEP_OVER = 0x20000000; // this instruction should be stepped over by setting a breakpoint afterwards + static constexpr u32 OVERINSTMASK = 0x18000000; // number of extra instructions to skip when stepping over + static constexpr u32 OVERINSTSHIFT = 27; // bits to shift after masking to get the value + static constexpr u32 LENGTHMASK = 0x0000ffff; // the low 16-bits contain the actual length + + static inline u32 step_over_extra(u32 x) { + return x << OVERINSTSHIFT; + } + + class data_buffer { + public: + virtual ~data_buffer() = default; + virtual u8 r8 (offs_t pc) const = 0; + virtual u16 r16(offs_t pc) const = 0; + virtual u32 r32(offs_t pc) const = 0; + virtual u64 r64(offs_t pc) const = 0; + }; + + enum { + NONLINEAR_PC = 0x00000001, + PAGED = 0x00000002, + PAGED2LEVEL = 0x00000006, + INTERNAL_DECRYPTION = 0x00000008, + SPLIT_DECRYPTION = 0x00000018 + }; + + virtual u32 interface_flags() const; + virtual u32 page_address_bits() const; + virtual u32 page2_address_bits() const; + virtual offs_t pc_linear_to_real(offs_t pc) const; + virtual offs_t pc_real_to_linear(offs_t pc) const; + virtual u8 decrypt8 (u8 value, offs_t pc, bool opcode) const; + virtual u16 decrypt16(u16 value, offs_t pc, bool opcode) const; + virtual u32 decrypt32(u32 value, offs_t pc, bool opcode) const; + virtual u64 decrypt64(u64 value, offs_t pc, bool opcode) const; + + virtual u32 opcode_alignment() const = 0; + virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) = 0; +}; +} + +#endif diff --git a/src/lib/util/timeconv.h b/src/lib/util/timeconv.h index 7f9a7830b8e..365af8c19fb 100644 --- a/src/lib/util/timeconv.h +++ b/src/lib/util/timeconv.h @@ -17,6 +17,7 @@ #include "coreutil.h" #include <chrono> +#include <algorithm> namespace util { @@ -35,6 +36,21 @@ typedef std::chrono::duration<std::uint64_t, std::ratio<1, 10000000> > ntfs_dura //--------------------------------------------------------- +// arbitrary_datetime +//--------------------------------------------------------- + +struct arbitrary_datetime +{ + int year; // absolute year (1900 AD = 1900) + int month; // month (1-12) + int day_of_month; // day of month (1-31) + int hour; // hour (0-23) + int minute; // minute (0-59) + int second; // second (0-59) +}; + + +//--------------------------------------------------------- // arbitrary_clock - an std::chrono clock that "knows" the // date of the epoch's begining //--------------------------------------------------------- @@ -55,6 +71,17 @@ public: static constexpr int base_second = S; //--------------------------------------------------------- + // from_arbitrary_datetime - converts an + // from_arbitrary_datetime to this arbitrary_clock's scale + //--------------------------------------------------------- + + static time_point from_arbitrary_datetime(const arbitrary_datetime &dt, bool clamp) + { + return time_point(duration_from_arbitrary_datetime(dt, clamp)); + } + + + //--------------------------------------------------------- // from_arbitrary_time_point - converts an arbitrary_clock // with a different scale to this arbitrary_clock's scale //--------------------------------------------------------- @@ -62,13 +89,15 @@ public: template<typename Rep2, int Y2, int M2, int D2, int H2, int N2, int S2, typename Ratio2> static time_point from_arbitrary_time_point(const std::chrono::time_point<arbitrary_clock<Rep2, Y2, M2, D2, H2, N2, S2, Ratio2> > &tp) { - const int64_t our_absolute_day = absolute_day(Y, M, D); - const int64_t their_absolute_day = absolute_day(Y2, M2, D2); - - const auto our_fract_day = std::chrono::hours(H) + std::chrono::minutes(N) + std::chrono::seconds(S); - const auto their_fract_day = std::chrono::hours(H2) + std::chrono::minutes(N2) + std::chrono::seconds(S2); - - const std::chrono::duration<Rep, Ratio> adjustment(std::chrono::hours(24) * (their_absolute_day - our_absolute_day) + (their_fract_day - our_fract_day)); + arbitrary_datetime dt; + dt.year = Y2; + dt.month = M2; + dt.day_of_month = D2; + dt.hour = H2; + dt.minute = N2; + dt.second = S2; + + const duration adjustment = duration_from_arbitrary_datetime(dt, false); const duration result_duration = std::chrono::duration_cast<duration>(tp.time_since_epoch() + adjustment); return time_point(result_duration); } @@ -142,6 +171,46 @@ private: // end of every quadcentury typedef arbitrary_clock<std::int64_t, 1601, 1, 1, 0, 0, 0, std::ratio<1, 1> > tm_conversion_clock; + + //--------------------------------------------------------- + // clamp_or_throw + //--------------------------------------------------------- + + static int clamp_or_throw(int value, int minimum, int maximum, bool clamp, const char *out_of_range_message) + { + if (value < minimum || value > maximum) + { + if (clamp) + value = std::min(std::max(value, minimum), maximum); + else + throw std::out_of_range(out_of_range_message); + } + return value; + } + + //--------------------------------------------------------- + // duration_from_arbitrary_datetime - converts an + // arbitrary_datetime to this arbitrary_clock's duration + //--------------------------------------------------------- + + static duration duration_from_arbitrary_datetime(const arbitrary_datetime &dt, bool clamp) + { + // range checking + const int month = clamp_or_throw(dt.month, 1, 12, clamp, "invalid dt.month"); + const int day_of_month = clamp_or_throw(dt.day_of_month, 1, gregorian_days_in_month(month, dt.year), clamp, "invalid dt.day_of_month"); + const int hour = clamp_or_throw(dt.hour, 0, 23, clamp, "invalid dt.hour"); + const int minute = clamp_or_throw(dt.minute, 0, 59, clamp, "invalid dt.minute"); + const int second = clamp_or_throw(dt.second, 0, 59, clamp, "invalid dt.second"); + + const int64_t our_absolute_day = absolute_day(Y, M, D); + const int64_t their_absolute_day = absolute_day(dt.year, month, day_of_month); + + const auto our_fract_day = std::chrono::hours(H) + std::chrono::minutes(N) + std::chrono::seconds(S); + const auto their_fract_day = std::chrono::hours(hour) + std::chrono::minutes(minute) + std::chrono::seconds(second); + + return std::chrono::duration<Rep, Ratio>(std::chrono::hours(24) * (their_absolute_day - our_absolute_day) + (their_fract_day - our_fract_day)); + } + //--------------------------------------------------------- // internal_to_tm - formats a structure of type 'struct tm' // based on a normalized clock |